Premium
Kinetics of hydrogen peroxide decomposition catalyzed by Cu‐buserite over a well‐sealed and thermostated kinetics assembly
Author(s) -
Feng Lili,
Lu Shupei,
Qi Lin,
Fang Mingwei,
Song Yiran
Publication year - 2020
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.21399
Subject(s) - chemistry , kinetics , hydrogen peroxide , activation energy , catalysis , decomposition , chemical kinetics , order of reaction , reaction rate , rate equation , copper , thermodynamics , inorganic chemistry , chemical engineering , reaction rate constant , organic chemistry , physics , quantum mechanics , engineering
Herein a well‐sealed and thermostated kinetics assembly is designed and built, which can run stirred at different reaction temperatures. With the reaction assembly above and the volumetric method together, the hydrogen peroxide (H 2 O 2 ) decomposition reaction kinetics is systematically investigated under a variety of reaction conditions over a copper‐doped buserite‐type layer manganese oxide (referred to as Cu‐buserite) as a heterogeneous catalyst. The overall second‐order rate law is fitted out by the linear regression analysis, with the reaction orders with respect to both H 2 O 2 and Cu‐buserite determined to each be equal to 1, and then explicitly explained by the proposed Michaelis‐Menten like mechanism. The apparent activation energy E a is estimated as 33.5 ± 2.5 kJ mol −1 .